Just my sole opinion, but I disagree with this. I absolutely hated being tethered, it always felt like a bit more weight back there pulling it down. No, not a huge effect, but still a few extra grams when you account for the cable, most of which I encountered were pretty thick and beefy, and the connector. It was so bad that I purchased one of those pulley systems you hang from your ceiling to hold up the cable, that's when I started to wonder if I really wanted to keep doing that and sold my Quest 1. I ended up getting a Quest 2 later on that was much more comfortable without the cable, but then battery life/graphics and all that made me again tether it with a thick/beefy cable, and ended up selling that one as well. I'm pretty sure I'm not going to bother with one of these until they are a lot lighter and more comfortable.
Now the VP cable looks pretty thin/light so in this case it probably doesn't matter much.